The most common and most likely answer to this crossword clue is the 6 plus 4 letter word DINNER LADY
I've seen this crossword clue in The Guardian
D
I
N
N
E
R
L
A
D
Y
More clues leading to the result DINNER LADY
- Employee in school yard up for keeping secret with boy
- Female serving the school
- Private school ultimately feeding parent, though not one daughter, as education centre nourishment technician
- Her dispensing work might be in a mess
- Initially dubious, target peeress’s job in school
- Spooner perhaps led dray shakily outside pub
Buddy explains!

The straight part
We know that "education centre nourishment technician" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case education centre nourishment technician = dinner lady.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.